diff --git a/core/java/android/view/InputEvent.java b/core/java/android/view/InputEvent.java
index 1ecdf3071281c..e2ad3ad45c649 100644
--- a/core/java/android/view/InputEvent.java
+++ b/core/java/android/view/InputEvent.java
@@ -195,6 +195,13 @@ public abstract class InputEvent implements Parcelable {
      */
     public abstract long getEventTimeNano();
 
+    /**
+     * Marks the input event as being canceled.
+     *
+     * @hide
+     */
+    public abstract void cancel();
+
     /**
      * Gets the unique sequence number of this event.
      * Every input event that is created or received by a process has a
diff --git a/core/java/android/view/KeyEvent.java b/core/java/android/view/KeyEvent.java
index 0701b53e41479..243a0fc17e52d 100644
--- a/core/java/android/view/KeyEvent.java
+++ b/core/java/android/view/KeyEvent.java
@@ -2303,6 +2303,16 @@ public class KeyEvent extends InputEvent implements Parcelable {
         return (mFlags&FLAG_CANCELED) != 0;
     }
 
+    /**
+     * Set {@link #FLAG_CANCELED} flag for the key event.
+     *
+     * @hide
+     */
+    @Override
+    public final void cancel() {
+        mFlags |= FLAG_CANCELED;
+    }
+
     /**
      * Call this during {@link Callback#onKeyDown} to have the system track
      * the key through its final up (possibly including a long press).  Note
diff --git a/core/java/android/view/MotionEvent.java b/core/java/android/view/MotionEvent.java
index ae39b7aeee6de..1c5c41c74905a 100644
--- a/core/java/android/view/MotionEvent.java
+++ b/core/java/android/view/MotionEvent.java
@@ -3168,6 +3168,12 @@ public final class MotionEvent extends InputEvent implements Parcelable {
         return ev;
     }
 
+    /** @hide */
+    @Override
+    public final void cancel() {
+        setAction(ACTION_CANCEL);
+    }
+
     public void writeToParcel(Parcel out, int flags) {
         out.writeInt(PARCEL_TOKEN_MOTION_EVENT);
         nativeWriteToParcel(mNativePtr, out);
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 5d2a24be51db0..fe174175567bd 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -3596,12 +3596,19 @@ public final class ViewRootImpl implements ViewParent,
             if (mView == null || !mAdded) {
                 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent);
                 return true;
-            } else if (!mAttachInfo.mHasWindowFocus &&
-                  !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) &&
-                  !isTerminalInputEvent(q.mEvent)) {
-                // If this is a focused event and the window doesn't currently have input focus,
-                // then drop this event.  This could be an event that came back from the previous
-                // stage but the window has lost focus in the meantime.
+            } else if ((!mAttachInfo.mHasWindowFocus || mStopped)
+                    && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) {
+                // This is a focus event and the window doesn't currently have input focus or
+                // has stopped. This could be an event that came back from the previous stage
+                // but the window has lost focus or stopped in the meantime.
+                if (isTerminalInputEvent(q.mEvent)) {
+                    // Don't drop terminal input events, however mark them as canceled.
+                    q.mEvent.cancel();
+                    Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent);
+                    return false;
+                }
+
+                // Drop non-terminal input events.
                 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent);
                 return true;
             }